中島工機 List of Products and Services

Based on years of experience with various types of stainless steel, SUS316L is highly regarded for its corrosion resistance and non-magnetic properties, and it is widely available in the market. We have developed bolts with a tensile strength of 1,000 N/mm² using SUS316L, along with nuts and washers designed to be used in combination with these bolts. In the development process, we focused on three points: 1. simplifying the manufacturing process, 2. preventing galling (deterioration of torque coefficient) due to metal contact between the bolt and nut when tightened with high axial force, and 3. ensuring that the nuts and washers, which must withstand the strength of the bolts, are developed from the same material.

• Fishing reef

Nord-Lock uses wedge-shaped cams and employs tension instead of friction, making it a unique loosening prevention method. It is a loosening prevention system that is incomparably safer than conventional methods.

• Joints between components
• Work tools
• Joining and fastening materials

UmbraCo bolts are manufactured using advanced heat treatment technology developed through the design and mass production of aerospace screws, achieving the industry's highest strength of 130-140 Kgf·mm² while also guaranteeing a elongation rate of 9%.

• Joints between components
• Work tools
• Joining and fastening materials